ASRock B550M-ITX/AC Supports 3rd Gen AMD AM4 vs MSI MAG B850M Mortar WiFi Motherboard, mATX
Updated August 2026 — ASRock B550M-ITX/AC Supports 3rd Gen AMD AM4 wins on compatibility, MSI MAG B850M Mortar WiFi Motherboard, mATX wins on cooling and features.
The MSI MAG B850M Mortar WiFi offers superior features and performance compared to the ASRock B550M-ITX/AC, making it the better choice for high-performance users. However, the ASRock is a solid budget option.
Why ASRock B550M-ITX/AC Supports 3rd Gen AMD AM4 is better
Price
ASRock is significantly cheaper at $109.99.
Size
Mini ITX form factor is ideal for compact builds.
Basic Features
Adequate audio capabilities for general use.
Why MSI MAG B850M Mortar WiFi Motherboard, mATX is better
Processor Support
Supports the latest AMD Ryzen 9000 series processors.
Memory Speed
Supports DDR5 memory with speeds up to 8200+ MT/s.
Cooling Solutions
Advanced cooling features for better heat management.
Overall score
Specifications
| Spec | ASRock B550M-ITX/AC Supports 3rd Gen AMD AM4 | MSI MAG B850M Mortar WiFi Motherboard, mATX |
|---|---|---|
| Socket | AM4 | AM5 |
| Audio | 7.1 CH | Audio Boost 5 |
| VRM | Standard | 12 Duet Rail |
| Wi-Fi | No | Wi-Fi 7 |
| USB Ports | Basic | USB 20G Type-C |
Dimension comparison
Overview of the ASRock B550M-ITX/AC and MSI MAG B850M Mortar WiFi
The ASRock B550M-ITX/AC is priced at $109.99, while the MSI MAG B850M Mortar WiFi comes in at $219.99, making the MSI motherboard about 100% more expensive. This price difference reflects the substantial features and capabilities of the MSI board, primarily aimed at gamers and high-performance users. The ASRock is a solid choice for those looking to build a budget-friendly system, particularly for AMD Ryzen 3000 and 5000 series processors, but it lacks the advanced features found in the MSI model.
Processor Support and Compatibility
The ASRock B550M-ITX/AC supports AMD AM4 socket Ryzen 3000, 4000 G-Series, and 5000 series processors, making it an excellent choice for users with older Ryzen CPUs. In contrast, the MSI MAG B850M Mortar WiFi is designed for the latest AMD Ryzen 9000, 8000, and 7000 processors, showcasing its advanced compatibility. This difference in processor support means that if future-proofing your build with the latest technology is a priority, the MSI model is the superior option.
Memory and Performance
When it comes to memory, the ASRock B550M-ITX/AC supports DDR4 memory with speeds of 4733+ MHz when overclocked. In comparison, the MSI MAG B850M Mortar WiFi offers support for DDR5 memory, enabling extreme performance with speeds of up to 8200+ MT/s when overclocked. The adoption of DDR5 in the MSI board signifies a leap in potential performance, appealing to gamers and professionals seeking maximum efficiency and speed.
Cooling Solutions
Cooling is crucial for maintaining optimal performance, and here the MSI MAG B850M Mortar WiFi excels with its premium cooling features. It includes 7W/mK MOSFET thermal pads and an extended heatsink, which contribute to improved heat management. The ASRock B550M-ITX/AC, while it has solid construction, does not boast the same level of advanced cooling solutions. For users planning to overclock their CPUs or run demanding applications, the MSI board's robust cooling capabilities make it the better choice.
Connectivity Options
In terms of connectivity, the ASRock B550M-ITX/AC provides essential options including DisplayPort and HDMI for graphics output, along with 7.1 channel HD audio. On the other hand, the MSI MAG B850M Mortar WiFi offers an extensive array of connectivity features, including Wi-Fi 7, Bluetooth 5.4, and a USB 20G Type-C port. This level of connectivity is particularly advantageous for gamers and content creators who require high-speed internet and fast data transfer capabilities.
Form Factor and Design
The ASRock B550M-ITX/AC has a Mini ITX form factor, making it suitable for compact builds. This can be a significant advantage for users with limited space. On the flip side, the MSI MAG B850M Mortar WiFi adopts a Micro ATX design, which allows for more expansion options, such as additional RAM slots and PCIe slots. While the ASRock is ideal for compact configurations, the MSI’s design is geared towards versatility and future upgrades.
Audio Capabilities
The audio capabilities of the ASRock B550M-ITX/AC include a 7.1 channel HD audio system powered by the Realtek ALC887 audio codec. This is adequate for most users. However, the MSI MAG B850M Mortar WiFi enhances this experience with Audio Boost 5, which improves audio quality and supports S/PDIF output. For gamers and multimedia enthusiasts who prioritize superior sound quality, the MSI board holds a distinct advantage.
Which should you buy?
Choosing between the ASRock B550M-ITX/AC and the MSI MAG B850M Mortar WiFi ultimately depends on your needs. If you are looking for an affordable option that supports older AMD Ryzen processors, the ASRock board is an excellent choice at $109.99. However, for those seeking the latest technology, advanced features, and better overall performance, the MSI board, despite its higher price of $219.99, offers significant advantages in connectivity, memory support, and cooling options. Thus, if your budget allows and you aim for a high-performance setup, the MSI MAG B850M Mortar WiFi is the way to go.